This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not have support for the XFS file system. It did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 5 as it did not backport the upstream commit ef14f0c1 that introduced the vulnerability. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2012-0350.html, and https://rhn.redhat.com/errata/RHSA-2012-0333.html.
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Red Hat Security Errata
|Red Hat Enterprise Linux Server EUS (v. 6.1) (kernel)||RHSA-2012:1042||2012-06-26|
|Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt)||RHSA-2012:0333||2012-02-23|
|Red Hat Enterprise Linux 6 (kernel)||RHSA-2012:0350||2012-03-06|
Affected Packages State
|Red Hat Enterprise MRG 2||realtime-kernel||Will not fix|
|Red Hat Enterprise Linux 5||kernel||Not affected|
|Red Hat Enterprise Linux 4||kernel||Not affected|
AcknowledgementsRed Hat would like to thank Wang Xi for reporting this issue.
CVE description copyright © 2017, The MITRE Corporation